GB 146.2-2020 PDF in English
GB 146.2-2020 (GB146.2-2020) PDF English
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Name of Chinese Standard | Status |
| GB 146.2-2020 | English | 125 |
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Gauge for standard gauge railways -- Part 2: Structure gauge
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| GB 146.2-1983 | English | 70 |
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Structure gauge for standard gauge railways
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Standards related to (historical): GB 146.2-2020
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GB 146.2-2020: PDF in English GB 146.2-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 93.100
S 04
Replacing GB 146.2-1983
Gauge for standard gauge railways - Part 2: Structure
gauge
ISSUED ON: OCTOBER 11, 2020
IMPLEMENTED ON: MAY 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Terms and definitions ... 5
3 General ... 5
4 v≤160 km/h passenger and freight railway structure gauge ... 6
5 v>160 km/h passenger and freight railway structure gauge ... 12
6 Passenger dedicated line structure gauge ... 14
Foreword
GB 146, Gauge for standard gauge railways, is divided into two parts:
-- Part 1: Rolling stock gauge;
-- Part 2: Structure gauge.
This Part is Part 2 of GB 146.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
This Part replaces GB 146.2-1983, Structure gauge for standard gauge
railways; compared with GB 146.2-1983, the main technical changes, except
editorial changes, are as follows:
-- Modify the name of the railway structure gauge to v ≤ 160 km/h passenger
and freight railway structure gauge (see Chapter 4; Chapter 4 of version
1983);
-- Modify the platform gauge height in the basic structure gauge (see Chapter
4; 4.1.1 of version 1983);
-- For tunnel gauge-1 and tunnel gauge-2, add the lower contour line of
newly-built tunnel at the lower gauge of 25 mm ~ 1 210 mm above the rail
surface (see 4.2.1, 4.2.2; 4.2.1, 4.2.2 of version 1983);
-- Delete tunnel gauge-1B, tunnel gauge 02B, bridge gauge-1B, bridge
gauge-2B (see 4.2.1, 4.2.2, 4.3.1, and 4.3.2 of version 1983);
-- Add v > 160 km/h passenger and freight railway structure gauge (see
Chapter 5);
-- Add the passenger dedicated line structure gauge (see Chapter 6);
-- Delete the reference diagram of the pantograph position of electrified
railway (see Appendix A of version 1983);
-- Delete the reference diagram of the off-gauge goods loading gauge (see
Appendix B of version 1983).
This Part shall be under the jurisdiction of the National Railway Administration
of the People’s Republic of China.
The drafting organizations of this Part: China Academy of Railway Sciences
Corporation Limited.
Gauge for standard gauge railways - Part 2: Structure
gauge
1 Scope
This Part of GB 146 specifies the basic structure gauge, tunnel structure gauge,
bridge structure gauge and bridge and tunnel structure gauge of 1 435 mm
standard gauge railway tracks.
This Part applies to the design, construction, operation and maintenance of the
following standard gauge railway tracks:
-- v ≤ 160 km/h passenger and freight railway;
-- v > 160 km/h passenger and freight railway;
-- Passenger dedicated railway.
2 Terms and definitions
The following terms and definitions are applicable to this document.
2.1 Structure gauge
The limit cross-sectional contour perpendicular to the center line of the track.
Within this contour, except for rolling stock and the equipment interacting with
rolling stock and related equipment (such as vehicle reducer, contact wire,
hanging string, locator), other equipment or structures shall not be invaded.
2.2 Design speed
The designed maximum travel speed of the train for the track.
Note: The designed speed is expressed in kilometers per hour.
3 General
3.1 Whether it is a new rail or an old rail (including the long-term replacement
of heavy rail thickened track beds), the structure gauge dimension that is
calculated from the rail surface shall meet the requirements.
3.2 The dimensions on each structure gauge drawing of this Part are based on
the track on the horizontal straight road.
3.3 The center distance of adjacent tracks in the curve part and the expanded
distance from the center line of track to the structure shall be calculated
according to the prescribed curve widening formula.
3.4 Due to the superelevation of the outer rail in the curve part, the vertical
height of the structure gauge shall be calculated from the straight line that is
formed by the highest points of the inner and outer rails; the horizontal
dimension shall be calculated from the center line of the track.
4 v≤160 km/h passenger and freight railway structure
gauge
4.1 Basic structure gauge
4.1.1 Structure gauge-1
4.1.1.1 The structure gauge-1 is the basic structure gauge of the v ≤ 160 km/h
passenger and freight railway, as shown in Figure 1.
Bridge structure gauge. The maximum height is calculated and
determined according to the height of the overhead line system
structure; the minimum shall not be less than 6 550 mm.
Basic structure gauge.
Lighting, communication, warning signals and color light signals can be
installed between the basic structure gauge and the bridge structure gauge.
Figure 6 -- Bridge gauge-2
4.3.3 Calculation of the widening amount of bridge structure gauge on the
curve
See 4.1.1.3 for the calculation method of the widening amount of bridge
structure gauge on the curve.
5 v>160 km/h passenger and freight railway structure
gauge
5.1 Basic structure gauge
5.1.1 Structure gauge-3 is the basic structure gauge of the v > 160 km/h
passenger and freight railway, as shown in Figure 7.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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